119 lines
3.5 KiB
Groff
119 lines
3.5 KiB
Groff
.\"-
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.\" Copyright (c) 2000, 2009 Robert N. M. Watson
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd February 25, 2016
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.Dt POSIX1E 3
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.Os
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.Sh NAME
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.Nm posix1e
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.Nd introduction to the POSIX.1e security API
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/types.h
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.In sys/acl.h
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.In sys/mac.h
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.Sh DESCRIPTION
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POSIX.1e describes five security extensions to the POSIX.1 API: Access
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Control Lists (ACLs), Auditing, Capabilities, Mandatory Access Control, and
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Information Flow Labels.
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While IEEE POSIX.1e D17 specification has not been standardized, several of
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its interfaces are widely used.
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.Pp
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.Fx
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implements POSIX.1e interface for access control lists, described in
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.Xr acl 3 ,
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and supports ACLs on the
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.Xr ffs 7
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file system; ACLs must be administratively enabled using
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.Xr tunefs 8 .
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.Pp
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.Fx
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implements a POSIX.1e-like mandatory access control interface, described in
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.Xr mac 3 ,
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although with a number of extensions and important semantic differences.
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.Pp
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.Fx
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does not implement the POSIX.1e audit, privilege (capability), or information
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flow label APIs.
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However,
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.Fx
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does implement the
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.Xr libbsm 3
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audit API.
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It also provides
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.Xr capsicum 4 ,
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a lightweight OS capability and sandbox framework implementing a
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hybrid capability system model.
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.Sh ENVIRONMENT
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POSIX.1e assigns security attributes to all objects, extending the security
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functionality described in POSIX.1.
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These additional attributes store fine-grained discretionary access control
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information and mandatory access control labels; for files, they are stored
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in extended attributes, described in
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.Xr extattr 3 .
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.Pp
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POSIX.2c describes
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a set of userland utilities for manipulating these attributes, including
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.Xr getfacl 1
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and
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.Xr setfacl 1
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for access control lists, and
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.Xr getfmac 8
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and
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.Xr setfmac 8
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for mandatory access control labels.
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.Sh SEE ALSO
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.Xr getfacl 1 ,
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.Xr setfacl 1 ,
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.Xr extattr 2 ,
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.Xr acl 3 ,
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.Xr extattr 3 ,
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.Xr libbsm 3 ,
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.Xr libcasper 3 ,
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.Xr mac 3 ,
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.Xr capsicum 4 ,
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.Xr ffs 7 ,
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.Xr getfmac 8 ,
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.Xr setfmac 8 ,
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.Xr tunefs 8 ,
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.Xr acl 9 ,
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.Xr extattr 9 ,
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.Xr mac 9
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.Sh STANDARDS
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POSIX.1e is described in IEEE POSIX.1e draft 17.
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.Sh HISTORY
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POSIX.1e support was introduced in
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.Fx 4.0 ;
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most features were available as of
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.Fx 5.0 .
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.Sh AUTHORS
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.An Robert N M Watson
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.An Chris D. Faulhaber
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.An Thomas Moestl
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.An Ilmar S Habibulin
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